Study on process mineralogy of a used cathode of carbon block from electrolytic aluminum factory
In order to treat a used cathode of carbon block from electrolytic aluminum factory harmlessly,many modern measurements were utilized to study its mineralogy,including chemical analysis,Transmission electron microscopy(TEM),X-ray diffraction(XRD),Scanning electron microscopy(SEM) and energy dispersive speetrescopy(EDS).The main chemical compositions of the material are C,Na,F,Al,Fe,Ca and SiO2,in which the content of C is 58.56% and F 9.86%.Main minerals appear as graphite,NaF and Na3AlF6,among which fluoride do harm to environment more seriously.To illustrate the relationship of minerals and chemical compositions clearly,they are divided into carbon-rich phase,sodium-rich phase,aluminum-rich phase,calcium-rich phase,iron-rich phase and silicate sate-rich phase in this paper.The main components crystallize closely,such as graphite,fluoride and silicate salt and so on,and carbon-rich phase disseminates in the particle size of nanometer to micron.According to the results oftheproeass mineralogy,its impossible to obtain purer gaphite just by physical methods.
Electrolytic aluminum used cathode of carbon block process mineralogy
Haiying Liu Jinling Wang Shifu Shen Youfa Luo
Beijing General Reseanch Institute of Min mg & MetallurgyBuilding 23, Zone 18 of ABP, No.188, South 4th Ring Road West, Beijing 100070, China
国际会议
The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))
北京
英文
749-757
2012-09-05（万方平台首次上网日期，不代表论文的发表时间）